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參數(shù)資料
| 型號(hào)： | CS5204-1GT3 |
| 英文描述： | Positive Adjustable Voltage Regulator |
| 中文描述： | 積極可調(diào)電壓穩(wěn)壓器 |
| 文件頁數(shù)： | 6/12頁 |
| 文件大?。?/td> | 88K |
| 代理商： | CS5204-1GT3 |
CS5203A–1, CS5203A–2, CS5203A–3, CS5203A–5
http://onsemi.com
6
The ESR of the output capacitor causes an immediate drop
in output voltage given by:
V
I
ESR
For microprocessor applications it is customary to use an
output capacitor network consisting of several tantalum and
ceramic capacitors in parallel. This reduces the overall ESR
and reduces the instantaneous output voltage drop under
load transient conditions. The output capacitor network
should be as close as possible to the load for the best results.
Protection Diodes
When large external capacitors are used with a linear
regulator it is sometimes necessary to add protection diodes.
If the input voltage of the regulator gets shorted, the output
capacitor will discharge into the output of the regulator. The
discharge current depends on the value of the capacitor, the
output voltage and the rate at which V
IN
drops. In the
CS5203A–X family of linear regulators, the discharge path
is through a large junction and protection diodes are not
usually needed. If the regulator is used with large values of
output capacitance and the input voltage is instantaneously
shorted to ground, damage can occur. In this case, a diode
connected as shown in Figures 11 and 12 is recommended.
Figure 11. Protection Diode Scheme for Adjustable
Output Regulator
C
2
V
OUT
V
IN
C
1
V
IN
V
OUT
Adj
CS5203A–1
IN4002 (optional)
C
Adj
R
1
R
2
Figure 12. Protection Diode Scheme for Fixed Output
Regulators
C
2
V
OUT
V
IN
C
1
V
IN
V
OUT
Gnd
CS5203A–X
IN4002 (optional)
Output Voltage Sensing
Since the CS5203A is a three terminal regulator, it is not
possible to provide true remote load sensing. Load
regulation is limited by the resistance of the conductors
connecting the regulator to the load. For best results the
fixed regulators should be connected as shown in Figure 13.
Figure 13. Conductor Parasitic Resistance can be
Minimized with the Above Grounding Scheme for
Fixed Output Regulators
V
IN
V
IN
V
OUT
Gnd
CS5203A–X
Conductor Parasitic
Resistance
R
C
R
LOAD
For the adjustable regulator, the best load regulation
occurs when R1 is connected directly to the output pin of the
regulator as shown in Figure 14. If R1 is connected to the
load, R
C
is multiplied by the divider ratio and the effective
resistance between the regulator and the load becomes
RC
R1
R2
R1
where R
C
= conductor parasitic resistance.
Figure 14. Grounding Scheme for Adjustable Output
Regulator to Minimize Parasitics
V
IN
V
IN
V
OUT
Adj
CS5203A–1
Conductor Parasitic
Resistance
R
1
R
LOAD
R
2
R
C
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PDF描述 |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| CS-5204-1T3 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Positive Adjustable Voltage Regulator |
| CS5204-2 | 制造商:ONSEMI 制造商全稱:ON Semiconductor 功能描述:4.0 A, 1.5 V Fixed Linear Regulator |
| CS5204-2/D | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:4A ， 1.5V Fixed Linear Regulator |
| CS5204-2_06 | 制造商:ONSEMI 制造商全稱:ON Semiconductor 功能描述:4.0 A, 1.5 V Fixed Linear Regulator |
| CS-5204-2DP3 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Positive Fixed Voltage Regulator |
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